Argon

Electron Backscatter Diffraction (EBSD)

EBSD experiments on ripples formed by sputtering of 60keV Argon ions at a 60° incident angle on single crystal silicon.
(Yes, it is a stretch for Argon; but it is an an interesting EBSD application!)

EDAX Periodic Table of Elements - Argon

Courtesy of T.K. Chini, Saha Institute of Nuclear Physics, India